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近年来,景洪农场四分场十队人群中黑牙齿、腰腿痛及关节活动障碍等症增多,引起了有关方面的注意.为此,我们于1985年1月进行了流行病学调查及病因探索.
In recent years, Jinghong Farm quarterback ten crowds of black teeth, low back pain and joint mobility disorders increased, attracted the attention of the parties concerned.To this end, we carried out in January 1985 epidemiological survey and Etiological exploration.